EL817(S)(A)(TU)-G

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The EL817(S)(A)(TU)-G is an optically isolated transistor output module with photovoltaic technology. Using its light-activated transistor output, this family of products is widely used for current- and voltage-sensing loops such as over-current, short-circuit, surge control and input line presence applications. In combination with its very fast response time and low countrmetric variation, the EL817(S)(A)(TU)-G module offers a reliable, highly accurate and repeatable switch or control solution.

The EL817(S)(A)(TU)-G module works to isolate electrical and mechanical noise surrounding the input signal from the output activation of the load. This optically isolated output ensures the safety of the system and the user, meaning that the EL817(S)(A)(TU)-G can be used in telecom, industrial, and medical applications, among many others. The module generally consists of input photo-transistor, LED on substrate, resistor, and galvanic isolation barrier.

The photo-transistor serves as the input element of the isolation barrier. The LED on substrate has two corresponding parts and functions as the output element of the isolation barrier. The resistor is configured with the input photo-transistor to provide a proper base current for the LED. The galvanic isolation barrier is also designed to ensure the safety of the user, minimizing the risk of electrical shock or damage from stray current.

The EL817(S)(A)(TU)-G opto transistor output module works on the principle of photoconductivity. When a voltage is applied across the emitter and collector of the input photo-transistor, the LED emits light which is then received by the corresponding part on the output element, activating it. This generates the output signal which is then coupled into the external circuit.

The EL817(S)(A)(TU)-G optoisolator is mainly used in industrial applications, such as signal isolation, motor control, PLC signal switching, and level sensing. In motor control applications, the EL817(S)(A)(TU)-G can be used to create a switch-type feedback to the controlling electronics based on the speed of the motor. In PLC signal switching applications, the device eliminates the need for galvanic coupling between inputs and outputs while providing a reliable, high-speed data transfer. The device is also widely used for over-current and surge protection, and to monitor the presence and level of an input signal.

The EL817(S)(A)(TU)-G opto-isolator provides a reliable and accurate switch or control solution thanks to its fast response time and low countermetric variation. Furthermore, its ability to isolate electrical and mechanical noise helps ensure the safety and integrity of the system and the user. With its versatile application field and comprehensive working principle, the EL817(S)(A)(TU)-G is an excellent opto transistor output module for almost any application.

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